I usually write an email in the order that I am thinking on it. First comes a paragraph or two of the details of the problem, then concluding with a sentence s

I usually write an email in the order that I am thinking on it. First comes a paragraph or two of the details of the problem, then concluding with a sentence saying what I would like the recipient to do. Every time, I then go back and move that concluding sentence to the top. That way, the email starts with what I would like to happen, and if the recipient doesn't have any objections, the remainder of the email can be skipped entirely.